Semih Metals, based in Istanbul, Turkey, stands out as a trusted manufacturer and supplier of top-notch metal products, including Duplex Steel Bars and Rods. Known for their precision in manufacturing and commitment to international quality standards, Semih Metals serves a variety of industries such as oil & gas, marine, chemical processing, and construction. Duplex Steel is celebrated for its remarkable blend of high strength and outstanding corrosion resistance, making it perfect for tough environments. Semih Metals offers Duplex Steel Bars and Rods in a diverse range of sizes and specifications, ensuring consistent quality, timely delivery, and reliable performance in both structural and pressure-based applications.
Duplex Steel Bars and Rods are crafted from stainless steel grades that feature a unique dual-phase microstructure of austenite and ferrite. Common grades like UNS S31803 and S32205 contain about 22% chromium (Cr), 5–6% nickel (Ni), 3% molybdenum (Mo), and nitrogen (N). These elements work together to provide exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking, especially in chloride-rich environments. On the mechanical side, Duplex Steel boasts high yield strength (around 450–550 MPa) and solid fatigue resistance. These characteristics, combined with excellent weldability and formability, make Duplex Steel Bars and Rods ideal for demanding industrial and marine applications.
| Grade | C | Mn | S | Cr | P | Si | Fe | Mo | Ni | N |
|---|---|---|---|---|---|---|---|---|---|---|
| S31803 | 0.030 | 2.00 | 0.020 | 22.0 – 23.0 | 0.030 | 1.00 | 63.72 min | 3.0 – 3.5 | 6.50 | 0.20 |
| S32205 | 2.50 – 3.50 | 0.8 |
| Grade | Hardness | Tensile Strength | Melting Point | Yield Strength | Density | Elongation |
|---|---|---|---|---|---|---|
| S31803 | 255 | 800 Mpa | 1350 °C (2460 °F) | 450 Mpa | 7.8 g/cm3 | 35 |
| S32205 |
| EN/ DIN/ WNR | 10088-3 |
|---|---|
| AFNOR | Z2CND22.05Az |
| BS (CAST) | 332C15 |
| UNS |
|
| WNR | 1.4462 |
| BS (WROUGHT) | 318S13 |
Yes, Duplex Steel Bars offer excellent corrosion resistance, particularly against stress corrosion cracking, pitting, and crevice corrosion. Their dual-phase microstructure enhances their resistance in harsh environments.
Duplex steel bars perform well in high-temperature environments due to their excellent strength and resistance to oxidation and scaling. Their dual-phase microstructure enhances thermal stability and durability under heat stress.
Yes, duplex steel rods can be customized in size and length to meet specific application requirements. They can be tailored to various dimensions and tolerances for different industries.
Duplex Steel Bars and Rods find their place in industries that demand both mechanical durability and corrosion resistance. You’ll typically see them used in pump shafts, heat exchanger tubes, pressure vessel components, fasteners, and structural parts in offshore oil rigs, desalination plants, and chemical refineries. Their ability to resist localized corrosion makes them perfect for aggressive environments that involve saltwater, acids, and high temperatures. Plus, these bars and rods can be easily machined and fabricated into custom shapes to meet specific needs.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Semih Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Istanbul, Turkey
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